class substring {
    str: string;
    constructor(str: string) {
        this.str = str;
    }
    display1() {
        var str1: string = '';
        for (let j = 0; j < this.str.length; j++) {
            for (let i = j; i < this.str.length; i++) {
                str1 += this.str[i];
                console.log(str1);
            }
            str1 = '';
        }
    }
}
var s = new substring("sridhar");
s.display1();